HT82K68A Datasheet, PDF (1/39 Pages) Holtek Semiconductor Inc – Multimedia Keyboard Encoder 8-Bit Mask MCU

HT82K68A
Multimedia Keyboard Encoder 8-Bit Mask MCU
Technical Document
· Tools Information
· FAQs
· Application Note
Features
· Operating voltage: 2.2V~5.5V
· 32/34 bidirectional I/O lines
· One 8-bit programmable timer counter with overflow
interrupts
· Crystal or RC oscillator
· Watchdog Timer
· 3K´16 program ROM
· 160´8 data RAM
· One external interrupt pin (shared with PC2)
· 2.4V LVR by option (default disable)
· HALT function and wake-up feature reduce power
consumption
· Six-level subroutine nesting
· Bit manipulation instructions
· 16-bit table read instructions
· 63 powerful instructions
· All instructions in 1 or 2 machine cycles
· 20/28-pin SOP, 48-pin SSOP package
General Description
The HT82K68A is an 8-bit high performance peripheral
interface IC, designed for multiple I/O products and mul-
timedia applications. It supports interface to a low speed
PC with multimedia keyboard or wireless keyboard in
Windows 95, Windows 98 or Windows 2000
environment. A HALT feature is included to reduce
power consumption.
Rev. 1.70
1
December 26, 2005